Why is Scylla faster than Cassandra?

ScyllaDB, instead of relying on page cache, allocates most of its memory to row-cache. These are the major optimizations in ScyllaDB which make it much faster, more reliable, and cheaper than Cassandra. Scylla has many other optimizations under the hood which can be found here.

What is Scylla Cassandra?

Scylla is a drop-in Cassandra NoSQL highly available and performance database that allows implementing ultra-low latency and high throughput data processes.

What is Scylla used for?

Scylla is the Best NoSQL Database. Low-latency interactive viewing history at massive scale. Instantaneous targeted video recommendations. Real-time fraud detection, across daily 6,000,000 transactions.

How fast is Cassandra?

Single node Cassandra always achieved better read performance (around 2400 op/s), than the cluster (2000 op/s).

Is Scylla better than Cassandra?

Scylla has 2x-5x better throughput than Cassandra 4.0 on the same 3-node cluster. Scylla has 3x-8x better throughput than Cassandra 4.0 on the same 3-node cluster while P99 <10ms. Scylla adds a node 3x faster than Cassandra 4.0.

What is Scylla alternator?

Scylla Alternator: The Open Source DynamoDB-compatible API. Project Alternator is an open-source project for an Amazon DynamoDB™-compatible API written in C++.

What is the difference between Scylla and Charybdis?

In classical mythology, Scylla was a horrible six-headed monster who lived on a rock on one side of a narrow strait. Charybdis was a whirlpool on the other side. When ships passed close to Scylla’s rock in order to avoid Charybdis, she would seize and devour their sailors.

Is Scylla NoSQL DB?

ScyllaDB Inc. Scylla is an open-source distributed NoSQL wide-column data store. It was designed to be compatible with Apache Cassandra while achieving significantly higher throughputs and lower latencies. Scylla uses a sharded design on each node, meaning that each CPU core handles a different subset of data.

Who killed Scylla?

Heracles
Heracles is said to have killed her, because she had stolen some of the oxen of Geryon; but Phorcys is said to have restored her to life (Eustath., Tzetz., Hygin., l. c.). Virgil (Aen. vi. 286) speaks of several Scyllae, and places them in the lower world (comp.

Is Scylla a NoSQL?

Scylla is an open-source distributed NoSQL wide-column data store. It was designed to be compatible with Apache Cassandra while achieving significantly higher throughputs and lower latencies. Scylla uses a sharded design on each node, meaning that each CPU core handles a different subset of data.

Is Cassandra good for aggregates?

To do aggregation on cassandra database, you need to use languages like PIG or HIVE which internally generate map-reduce code which performs very good for large data in the cluster. For that you need to have Hadoop environment set up.

What is the difference between ScyllaDB and Cassandra?

The obvious difference between Cassandra and ScyllaDB is performance. ScyllaDB can be around 10X faster than Cassandra for the same load (the performance difference will vary according to the load and hardware). This allows you to get more out of your nodes, or to use fewer nodes. Another difference is around latency.

Can I migrate my data from Cassandra to Scylla?

Scylla even provides a Spark-based Scylla Migrator and Migration Guide to easily move your data from your existing Cassandra clusters into Scylla. To enable even more NoSQL database consolidation, Scylla also supports a DynamoDB-compatible API, so you can migrate even more use cases.

What is the difference between change-data-capture (CDC) and Cassandra?

Scylla supports change-data-capture (CDC) as a CQL table, so you can easily track your database changes in a consistent way with the same query language you already know. On Cassandra, by comparison, CDC is a commitlog-like structure you have to write custom programs to interact with and requires deduplication.

What programming language does Scylla use?

Scylla uses C++20 and the best compiler techniques, as well as deep knowledge of the Linux kernel and per-core hyperthreading to maximize CPU utilization. Scylla also automatically configures your network card interrupts to balance interrupt request (IRQ) processing across CPU cores.